WO2020064778A3 - Low cost fundus imager with integrated pupil camera for alignment aid - Google Patents

Low cost fundus imager with integrated pupil camera for alignment aid Download PDF

Info

Publication number
WO2020064778A3
WO2020064778A3 PCT/EP2019/075770 EP2019075770W WO2020064778A3 WO 2020064778 A3 WO2020064778 A3 WO 2020064778A3 EP 2019075770 W EP2019075770 W EP 2019075770W WO 2020064778 A3 WO2020064778 A3 WO 2020064778A3
Authority
WO
WIPO (PCT)
Prior art keywords
reflex
low cost
camera
alignment aid
pupil camera
Prior art date
Application number
PCT/EP2019/075770
Other languages
French (fr)
Other versions
WO2020064778A2 (en
Inventor
Jochen Straub
Robert SPROWL
Yuan Liu
Matthew J. Everett
Original Assignee
Carl Zeiss Meditec, Inc.
Carl Zeiss Meditec Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Carl Zeiss Meditec, Inc., Carl Zeiss Meditec Ag filed Critical Carl Zeiss Meditec, Inc.
Priority to CN201980063270.8A priority Critical patent/CN112867433A/en
Priority to EP19778488.7A priority patent/EP3856003A2/en
Priority to US17/277,177 priority patent/US20210369109A1/en
Priority to JP2021516963A priority patent/JP7478727B2/en
Publication of WO2020064778A2 publication Critical patent/WO2020064778A2/en
Publication of WO2020064778A3 publication Critical patent/WO2020064778A3/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
    • A61B3/12—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for looking at the eye fundus, e.g. ophthalmoscopes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/0008—Apparatus for testing the eyes; Instruments for examining the eyes provided with illuminating means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/0016—Operational features thereof
    • A61B3/0033—Operational features thereof characterised by user input arrangements
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
    • A61B3/14—Arrangements specially adapted for eye photography
    • A61B3/15—Arrangements specially adapted for eye photography with means for aligning, spacing or blocking spurious reflection ; with means for relaxing
    • A61B3/156—Arrangements specially adapted for eye photography with means for aligning, spacing or blocking spurious reflection ; with means for relaxing for blocking
    • A61B3/158—Arrangements specially adapted for eye photography with means for aligning, spacing or blocking spurious reflection ; with means for relaxing for blocking of corneal reflection

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Medical Informatics (AREA)
  • Biophysics (AREA)
  • Ophthalmology & Optometry (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Eye Examination Apparatus (AREA)

Abstract

A low cost fundus camera uses LED light sources placed adjacent the camera's imaging stop, and thereby eliminates the need for optics for introducing the light source to the camera's optical path. Lens reflex in the pupil relay is avoided by using only reflective optics in the pupil relay. Reflex from the LEDs is mitigated by actuating each LED separately, one at a time, and capturing a separate image with each actuated LED. Reflex- free regions of each captured image are extracted and combined to create a composite, reflex-free image.
PCT/EP2019/075770 2018-09-28 2019-09-24 Low cost fundus imager with integrated pupil camera for alignment aid WO2020064778A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201980063270.8A CN112867433A (en) 2018-09-28 2019-09-24 Low cost fundus imager with integrated pupil camera for alignment assistance
EP19778488.7A EP3856003A2 (en) 2018-09-28 2019-09-24 Low cost fundus imager with integrated pupil camera for alignment aid
US17/277,177 US20210369109A1 (en) 2018-09-28 2019-09-24 Low cost fundus imager with integrated pupil camera for alignment aid
JP2021516963A JP7478727B2 (en) 2018-09-28 2019-09-24 Low-cost fundus imager with integrated pupil camera for alignment assistance

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201862738572P 2018-09-28 2018-09-28
US62/738,572 2018-09-28

Publications (2)

Publication Number Publication Date
WO2020064778A2 WO2020064778A2 (en) 2020-04-02
WO2020064778A3 true WO2020064778A3 (en) 2020-09-24

Family

ID=68069769

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2019/075770 WO2020064778A2 (en) 2018-09-28 2019-09-24 Low cost fundus imager with integrated pupil camera for alignment aid

Country Status (5)

Country Link
US (1) US20210369109A1 (en)
EP (1) EP3856003A2 (en)
JP (1) JP7478727B2 (en)
CN (1) CN112867433A (en)
WO (1) WO2020064778A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20240094811A1 (en) * 2022-09-16 2024-03-21 Zinn Labs, Inc. Tracking system using a differential camera with a co-aligned light source assembly
CN115474895B (en) * 2022-09-29 2024-05-28 山东探微医疗技术有限公司 OCT fundus imaging device and method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060177205A1 (en) * 2005-02-07 2006-08-10 Steinkamp Peter N System and method for reflex-free coaxial illumination
US20110234977A1 (en) * 2010-03-23 2011-09-29 Steven Roger Verdooner Apparatus and method for imaging an eye
US20120212598A1 (en) * 2011-02-17 2012-08-23 Richard Allen Mowrey Photorefraction ocular screening device and methods
US20180014727A1 (en) * 2015-02-05 2018-01-18 Carl Zeiss Meditec Ag Method and apparatus for reducing scattered light in broad-line fundus imaging

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3915564A (en) 1974-09-12 1975-10-28 Zeiss Stiftung Retinal image-display system
JP2003079579A (en) * 2001-09-13 2003-03-18 Canon Inc Ophthalmic device
US20050105044A1 (en) * 2003-11-14 2005-05-19 Laurence Warden Lensometers and wavefront sensors and methods of measuring aberration
US7768652B2 (en) 2006-03-16 2010-08-03 Carl Zeiss Meditec, Inc. Methods for mapping tissue with optical coherence tomography data
US8488895B2 (en) 2006-05-31 2013-07-16 Indiana University Research And Technology Corp. Laser scanning digital camera with pupil periphery illumination and potential for multiply scattered light imaging
CN201920702U (en) * 2011-01-05 2011-08-10 毛健 Mydriasis-free digital fundus camera and corresponding pupil positioning system
GB201100555D0 (en) * 2011-01-13 2011-03-02 Optos Plc Improvements in or relating to Ophthalmology
DE102011114753A1 (en) 2011-09-29 2013-04-04 Carl Zeiss Meditec Ag Optical lighting system for fundus camera, has reflective optical element whose focus point of to-be-examined pupil of eye is in correspondence with focus point of another reflective optical element of perforated mirror
US9456746B2 (en) 2013-03-15 2016-10-04 Carl Zeiss Meditec, Inc. Systems and methods for broad line fundus imaging
JP6499416B2 (en) * 2014-10-10 2019-04-10 キヤノン株式会社 Ophthalmic apparatus and method for controlling ophthalmic apparatus
US10849498B2 (en) * 2015-08-12 2020-12-01 Carl Zeiss Meditec, Inc. Alignment improvements for ophthalmic diagnostic systems
CN105662332A (en) * 2016-04-13 2016-06-15 南京航空航天大学 Wide-angle eye ground retina imaging device and method for annular illumination
JP6824647B2 (en) * 2016-07-01 2021-02-03 サッポロビール株式会社 Filling device and filling method
JP2019118720A (en) * 2018-01-10 2019-07-22 株式会社ニデック Ophthalmography device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060177205A1 (en) * 2005-02-07 2006-08-10 Steinkamp Peter N System and method for reflex-free coaxial illumination
US20110234977A1 (en) * 2010-03-23 2011-09-29 Steven Roger Verdooner Apparatus and method for imaging an eye
US20120212598A1 (en) * 2011-02-17 2012-08-23 Richard Allen Mowrey Photorefraction ocular screening device and methods
US20180014727A1 (en) * 2015-02-05 2018-01-18 Carl Zeiss Meditec Ag Method and apparatus for reducing scattered light in broad-line fundus imaging

Also Published As

Publication number Publication date
EP3856003A2 (en) 2021-08-04
US20210369109A1 (en) 2021-12-02
CN112867433A (en) 2021-05-28
WO2020064778A2 (en) 2020-04-02
JP7478727B2 (en) 2024-05-07
JP2022501135A (en) 2022-01-06

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